00854cam a2200325 i 4500 000046252 5711 20030401134028.0 010220|1990 vm 000 eng 0471922587 IRC IRC IRC eng 628.35 HO-N Horan, N. J. Biological wastewater treatment systems : theory and operation / N. J. Horan. New York : John Wiley and Sons, 1990. viii, 310p. : ill. Sewage. Purification. Sewage Purification Biological treatment. DUT From the UDN01 Monograph Printed language Mạng thư viện Đại học Đà Nẵng